Resources Contact Us Home
Decoding device for decoding a variety of code signals

Image Number 12 for United States Patent #5675331.

A decoding device is provided including a code FIFO memory unit for sequentially storing a bit stream, a barrel shifter for shifting and then outputting codes properly, an accumulator for computing the shift amount of the barrel shifter and issuing a request to read data to the code FIFO memory unit, a DCT coefficient decoder for decoding DCT coefficients, a variable-length code decoder for decoding variable-length codes other than DCT coefficients, a fixed-length code decoder for decoding fixed-length codes, a register unit for storing decoded data, a decoding controller for controlling the decoders in accordance with the decoded data stored in the register unit and decoded data output by the decoders and a memory controller for controlling operations to store DCT coefficients in a memory unit A. The DCT coefficient decoder, the variable-length code decoder and the fixed-length code decoder are connected in parallel to the output of the barrel shifter and the memory controller is controlled by the decoding controller. By virtue of this structure, the decoding device is capable decoding a bit stream comprising variable-length codes mixed with fixed-length codes. The decoding device is also capable of changing processing of a next code in accordance with decoded codes. Further, these operations can be implemented by means of a simple and reasonable configuration. On top of that, the process of decoding codes at a required high speed is carried out by an independent circuit, allowing the processing power of the decoding circuit to be enhanced.

  Recently Added Patents
Variety corn line KDC7040
Binder for secondary battery providing excellent adhesion strength and cycle property
Systems and methods for implementing pressure sensitive keyboards
Crowd validated internet document witnessing system
Hydrothermal synthesis of nanocubes of sillenite type compounds for photovoltaic applications and solar energy conversion of carbon dioxide to fuels
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Method for encoding signal, and method for decoding signal
  Randomly Featured Patents
Method and apparatus for cooling with a phase change material and heat pipes
Printed circuit board and semiconductor device using the same
Adjustable shelf partition
Polynucleotides encoding haemopoietic maturation factor
Apparatus for operating the roof panel of a sliding roof or a sliding tilting roof of a motor vehicle
User interface substrate for handset device having an audio port
Apparatus for cutting wafer sandwiches
Filter-collector apparatus
Method for securing an array of components for processing in a gas-flush packaging machine
Method for depositing silicon nitride layer of semiconductor device